OLED Display Panel Driving Circuit Alternating Data Line Segmentation
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Solution Overview
Problem
OLED display panels consume high power due to high brightness, and reducing driving current to lower brightness does not significantly reduce power consumption, affecting eye health during tasks like reading.
Innovation Solution
A driving method and circuit that alternately apply data voltage signals to first and second data lines when scanning gate lines, allowing only part of the pixel units to display, thereby reducing power consumption while maintaining image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the driving current is reduced to lower the brightness of OLED panel, then the brightness is reduced, but the power consumption cannot be significantly reduced
Solution Approach 1:
The patent divides the data lines into two separate groups (first data lines and second data lines) and controls them independently through different driving waveforms. This segmentation allows the system to activate only half of the pixel units at any given time, thereby reducing power consumption while maintaining display functionality.
Solution Approach 2:
The patent implements periodic switching between two driving modes: a first driving waveform that activates pixel units connected to first data lines, and a second driving waveform that activates pixel units connected to second data lines. This periodic alternation ensures continuous display coverage while reducing instantaneous power consumption by half.
2Illumination intensity
If the driving current is reduced to lower brightness, then the brightness is reduced, but the image display quality deteriorates
Solution Approach 1:
By periodically switching between two driving waveforms that cover different sets of pixel units, the patent ensures that all pixel units are activated over time. This maintains complete image coverage and display quality while reducing the instantaneous load and power consumption.
Solution Approach 2:
The patent dynamically adjusts the driving waveform based on the current scanning line being processed. Different waveforms are applied depending on whether the current row requires activation of first data lines or second data lines, optimizing both image quality and power consumption adaptively.
3Illumination intensity
If high brightness is maintained for OLED panel, then the display quality is good, but the power consumption is high affecting eye health
Solution Approach 1:
The patent segments the pixel units into two groups controlled by different data line sets, allowing only half of the pixels to be active at any moment. This reduces the total power consumption and heat generation, thereby mitigating harmful effects on eye health during prolonged reading tasks.
Solution Approach 2:
The patent changes the driving parameters by applying different voltage waveforms to different data line groups. This parameter variation allows the system to maintain adequate brightness for display quality while reducing the overall power consumption to levels that are safer for eye health during extended use.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method effectively lowers power consumption of OLED panels to half while maintaining the same brightness, with minimal impact on image display quality due to the small area of each pixel unit.
Implementation Method 1
When the switching tube is turned on through the gate line corresponding to a pixel unit, the data line corresponding to the pixel unit transfers a data voltage signal to the gate of the driving TFT
Implementation Method 2
the driving tube generates a corresponding driving current according to the data voltage signal to control the organic material in the OLED to emit light
Data Source
AI summary
The present invention provides a driving method and a driving circuit of a display panel and a display device. The display panel comprises: gate lines and data line and pixel units, the data lines comprises: first data lines and second data lines, and a first predetermined number of first data line(s) and a second predetermined number of second data line(s) are alternately arranged. The driving method comprises a step of: scanning the gate lines in turn, wherein when scanning one gate line, a data voltage signal is applied to the first data lines or the second data lines. Compared to the driving method in the prior art, the driving method provided by the present invention allows lower power consumption of the OLED panel when display at the same brightness is achieved.